Revolving calendar



b 6 e h. S W e e h S 2 m ED m D L NA N m L w E R (No Model.)

No. 244,469. Patented July 19,1881; 4

2 SheetsF-Sheet 2- (No Model.

G. F. MoINDOE. REVOLVING CALENDAR. No. 244.469. "Patented July 19,1881.

' Fig.2.

UNIT D STATES PATENT OFFICEQ GEORGE F. MGINDOE, OF EVERETT, MASSACHUSETTS.

. REVOLVING CALENDAR.

SPECIFICATION forming part of Letters Patent No. 244,469, dated July 19, 1881. Application filed February 14, 1881. (No model.)

To all whom it may concern Belt known that I, GEORGE FRANCIS Mo- INDOE, of Everett, Massachusetts, have invented a new and useful Form for a Calendar, of which the following is a specification.

My invention relates to a new and original form of revolving calendar, the circle of figures indicating the days of the month being stationary, the letters indicating days of the weeks and months revolving from a common center, that they may be made to register any day or month. I attain this effect by the mechanism illustrated in the accompanying drawin gssimilar letters refer to similar partsin which- Figure 1 is the vertical face complete. Fig. 2 represents the central disk, in shape substantially as illustrated, with figures representin g the days of the month around the margin, and provided with an opening, through which is seen the name of the month, and the apron 12, which is perforated at 01, cut in the same disk, for the purpose of covering a part of disk B. Fig. 3 represents a disk with names of months upon the margin and provided with perforations c. Fig. 4 represents a disk divided into thirty-seven equal parts for inserting letters to denote days of the weeks, and has seven perforations, f Fig. 5 a sectional view of Fig. 1. Fig. 6 represents the'pin g attached to the spring D, which spring is held in position by the eyelet c. The eyelet also holds the disks together. The pin is used to prevent the accidental moving of disks when set for any month.

To set the calendar for any given n1onth,remove the pin g from perforations by means of spring D revolve disk 0 till name of month shows through opening a; then revolve disk B till the day of the week on which the month begins comes under figure 1 on margin of disk A, which will bring a perforation in each disk under the pin, into which the pin will move when the spring is released.

What I claim as my invention, and desire to secure by Letters Patent, is-- A revolving calendar composed of the back disk, 0, having the month-names in marginal series, the middle disk, A, having marginal day-numerals, slota for showing month-names, and apron b, and the front disk, B, of less diameter than the others, overlapped by the apron b and bearing thirty seven marginal day-initials, said disks moving on a central' pivot andco-operating substantially as and for the purpose described.

GEORGE FRANCIS MGINDOE. Witnesses:

CHAS. S. LINooLN, CHAS. P. LINCOLN. 

